Pulverizing-machine.



Patented June 27, I899.

G. FRISBEE.

PULVERIZING MACHINE.

(Applicatin filed June 1, 1898.1

2 Sheets-Sheet l.

(N0 Model.)

WINES 55s: a .4

d. )JMZZ ATTOR N EY NORRIS PETERS co wnmauwo WASHINGTON a. c.

No. 627,579. Patented lune-27, I899. G. FRISBEE.

PULVERIZING MACHINE.

(Application filed June 1, 1898.)

2 Sheets-Sheet 2.

k v H WITNESSES: lygygNglR M44 w {jam/a BY v ATTORNEY.

m: Noams PETERS co. FHOTO LITHO., WASHINGTON, n. c.

UNITED STATES PATENT OFFICE;

GIDEON FRISBEE, or PHILADELPHIA, PENNSYLVANIA.

PULVERIZING-MACHINE.

SPECIFICATION forming' p'art of Letters Patent No. 627 ,579, dated June27, 1899.

Application filed Tune 1, 1898. Serial No. 682,260. (No model.) i

To all whom/it may concermg 4 Be it known that I, GIDEON FRISBEE, acitizen of the United States, residing at Philadelphia, county ofPhiladelphia, and State of Pennsylvania, have invented a newand usefulImprovement in Pulverizing-Machines, of which the following is a full,clear, and exact specification.

My invention relates to an improvement in pulveriZing-machines, and moreparticularly to the discharge apparatus in connection therewith.

The object of my invention is to provide a discharge apparatus for apulverizing-machine by means of which a uniformity of product isdelivered without waste or loss of the material to be pulverized, thepulverized maf terial being automatically fed to the apparatus anddischarged therefrom. The discharge apparatus may also be adjusted so asto permit only granules of a desired size to pass there. through,coarser particles being returned to the pulverizing-chamber to befurther acted upon. 7

My invention is illustrated by the accompanying drawings, in which vFigure 1 is a side elevation of a pulverizing-machine provided with myimproved discharge apparatus. Fig. 2 is an enlarged sectional elevationof the pulverizing-chamber and the discharge apparatus; and Fig. 3-is across-section of the discharge apparatus on the plane of the line a; 00,Fig. 2. 7

Similar letters refer to similar-parts.

In describing my invention I have illustrated it as attached to one formof pulveriziug-machine, in which A is a casing carrying movablepulverizing-rolls B B, carried by a shaft D, the said rolls beingrevolved rapidly within the casing A, so that by centrifugal action theypress outwardly against the ringdie E, crushing or breakingsuchsubstances as may be-between the said die and the adja' cent surfaces ofthe rolls. In this form of machine a circulation of air is producedtending to throw any substancecontained within said casing away from thecenter and toward the surface of the die. The shaft D is driven by anysuitable means.

F is a casing located adjacent to the end of the pulverizing-chamber,said end of the pulverizing-chamber opening into the interior of thecasing F.

G is a screen carried within said casing F and mounted upon a frame H,which is in turn mounted upon a revoluble shaft I.

J is a rim supported by arms K K, carried by and forming, by preference,part of the frame H. I

The screen G is cupshaped, the side walls diverging. The wider end .ofthe cup-shaped screen faces the opening in the pulverizingchamber, thelower edge of the said screen being located above the lowest point inthe inner periphery of the ring-die E, for the purpose hereinafterdescribed. If desirable, a supplemental screen L may be provided, asshown, the mesh of theinside screen being, by preference, slightlygreater than the outside screen G. p v v M is a gear-Wheel carried bythe shaft I, which gear is driven bythe pinion N through the idle r O.Ehe pinion-N is mounted upon the shaft P, which may be driven bysupplemental means or bya belt connection with the shaft .D, asshown'in'said dotted outline. Q is a hopper for regulatingthefeed-supply, the said hopper carrying a distributingroll of anyordinary construction, driven by means of a gear R, which is bypreference actuated in turn by a worm screw S on shaft P.

In operation the feed supply is passed through the hopper Q and isdirected to the interior of the pulveriZing-chamberA, where by means ofthe rolls B B the same is crushed into a finely-divided state. Then thesame has been rendered su fficiently fine, it is driven off by theair-currents tending away from the center of the pulverizing-chamber,and the fine particles enter the screen L, which is revolved,preferably, at slower speed. If the material thus driven into the screenis suffi ciently fine, it passes through the mesh of the screen orscreens and is delivered through the spout T to a suitable receptacle.Coarse particles, which cannot pass through said screen, gravitate backinto the pulv'erizing-chamber by being rolled over and over in the lowerpart of the screen,which inclines downwardly, so that the tendency ofthe rotary movement of the said screen is to work the coarser particlesin the direction of the pulverizing-cham= her, in which said coarserparticles are acted upon until reduced to a sufficiently finely dividedstate. As {LDOXG stated, if desirable two or more screens may be used,so as to add to the capacity of the discharge apparatus in handling theproduce in process of pulverizing.

The size of the granules delivered from the machine may be varied bysubstituting screens having meshes of the desired size. In thepreferable form the rearends of the screens are closed by the frame H,which is in substantially the form of the disk.

U U are wearing-rings arranged back of the rim J and between said rimand the flanges V. These wearing-rings are provided for the purpose ofalfording a bearing-surface to the rear of the rim J instead of to thefront of said rim. The position of the rim J with respect to the openend of the pulverizer-casing may be adjustedby introducing wearing-ringsU of the desired thickness. The disk H may be shifted upon the shaft I,so as to effect the further adjustment of said wearing-rings.

It is obvious that in carrying out my invention some changes in theparticular construction shown and described may be made, and I wouldtherefore have it understood that I do hot limit myself to the specificform shown,but hold myself at liberty to make such changes as are fairlywithin the spirit and scope of my invention.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

1. In a pulveriziug-machine, in combination, a pulverizing-chamber,astationary ringdie and revoluble rolls therein,and a discharge apparatuscom prising one or more cup-shaped screens located adjacent to one endof the pulveriziug-chamber and mounted uponan independent]y-revolubleframe, the lower edge of said screen or screens being substantiallyabove the lower inner edge of the said ringdie.

2. In a pulverizing-machine, in combination, a pulverizing-chamber, astationary die, and revoluble rolls therein, a discharge apparatuscomprising one or more cup-shaped screens located outside of andadjacent to one end of the pulverizing-chamber and mounted upon anindependently-revoluble frame or holder, the lower edge of said screenorscreens being above the plane of the lower edge of the ring-die,aseparate casing having a discl1argcspout surrounding said screeningapparatus, and means for revolving said screens.

3. In a pulverizing-machine, in combination, a stationarypulverizing-chamber, a sta tionary ring-die therein,revoluble rollswithin said die, a discharge apparatus comprising one or more cup-shapedscreens located adj acent to one end of said pulverizing-chamber andmounted upon an ind ependently-revolnble frame, wearing-rings and meansfor adjusting the position of said revoluble frame, the lower edge ofsaid screen or screens being located substantially above the plane ofthe lower inner edge of the die, a casing surrounding said screeningapparatus, a discharge-spout for pulverized material, andreturn-passages for unpulverized material.

GIDEON FRISBEE.

Witnesses:

R. O. MITCHELL, L. VIERLAND.

